application.rb

require 'haml'
require 'sinatra/base'

class Application < Sinatra::Base
  configure do
    set :server, 'thin'
  end

  get '/' do
    haml :index
  end
end

config.ru

$LOAD_PATH.unshift(File.dirname(__FILE__))
require 'application'

run Application

Gemfile

source 'http://rubygems.org/'

gem 'sinatra', '~> 1.3.0'
gem 'thin'
gem 'haml'

index.haml

%h1 Index

layout.haml

!!!
%html
  %head
    %link{:rel => 'stylesheet', :type => 'text/css', :href => 'styles.css', :media => 'screen'}
    %title Φαρμακείο Metropolis 
  %body
    #wrapper
      #header
        #content
          = yield
      #footer
        %p Panagiotis Atmatzidis - All rights (c) reserved 2012

styles.css

body {
  background-color:#2A4A31;
	/* -webkit-background-size: cover; */
	/* -moz-background-size: cover; */
  /* -o-background-size: cover; */
  /* background-size: cover; */
}

#wrapper{
    width:1200px;
    margin:0 auto;
}
#content{
    text-align:center;
    margin:auto;
}
h1 {color:#FFFFFF;}
h1 {font-size:100px;}
h2 {color:#FFFFFF;}
h2 {font-size:60px;}
p {color:#FFFFFF;}
p {font-size:20px;}
p {line-height:200%;}
#footer{
    font-size:10px;
    text-align:center;
    clear:both;
    /* background-color:#ade; */
    font-family:sans-serif;
    color:#333;
}